这两个词组看着很像，但是，含义和用法却有着很大的差别。请看：
so that 引导目的状语从句或结果状语从句，意为“以便;是为了”“这样……就可以”“结果”，相当于in order to/so as to.常放于句中，但是in order to常放于句首或句中，so as to常放于句末。
Tell me her address so that I can go and see her.
把她的地址告诉我，我好找她。
She worked hard so that everything would be ready in time.
她卖力地干着，为的是一切能够及时就序。
He checked carefully, so that the mistakes were caught.
他仔细检查，以便发现错误。
They may be able to help with childcare so that you can have a break
他们可以帮忙照料孩子，这样你就可以歇一歇了。
I set up the computer so that they could work from home.
我把电脑设置好，这样他们就可以在家办公了。
You have to carry a phone so that they can call you in at any time.
你要随身带着手机，以便他们随时呼你。
I'll give you all the facts so that you can judge for yourself.
我把所有事实都告诉你，使你得以自己作出判断。
He may find the line cut on the telephone so that he can't get through
他可能会发现电话线被切断了，所以打不通。
Xiao Hua studies hard so that she can get a good grade in last examination. 小华学习努力是为了在期末考试中取一个好成绩。
We perfected a hand-signal system so that he could keep me informed of hazards
我们完善了一套手势信号，这样他就能随时告知我什么时候有危险了。
You make friends with people and then make unreasonable demands so that they reject you.
你和别人交朋友，然后向人家提出无理要求，结果被人家拒绝。
Let me remind you once again so that you won't forget.
我再说一遍，省得你忘了。
He sacrificed his own career so that his avaricious brother could succeed.
他牺牲了自己的事业，这样他贪婪的弟弟才能成功。
The proposal is to pay everything you owe, so that you can start with a clean slate.
建议你还清所有的债务，这样你就能够重新开始了。
I want to learn as much as possible about the industry so that I'm better prepared
我想尽可能多学一些关于这个行业的知识，让自己更有备无患。
Send me a letter as soon as you arrive so that I won't worry.
到了就来信，省得我挂念。
We should give this project every support so that it may be completed on schedule.
我们对该项工程应予大力支持，是为了工程能按期完成。
How can I begin to restructure my life so that I'm happier with it?
我怎样才能开始调整自己的生活，让自己更快乐一些？
Hold it up so that we can see it.
把它举起来让我们看看。
I want to teach Irish so that it won't die out.
我想教爱尔兰语，这样它就不会彻底消失。
They'd already driven along the wharf so that she could point out her father's boat.
他们已经开车沿码头走了一遍，好让她指出哪艘是她父亲的船。
They ask me to join the party so that I'll be their scapegoat when trouble comes.
他们想叫我入伙，出了乱子，好让我替他们垫背。
I had the flat decorated quickly so that Philippa could move in.
我很快地把公寓粉刷了一遍，这样菲利帕就能搬进来了。
He took her arm and hurried her upstairs so that they wouldn't be overheard
他挽起她的手臂，带她匆匆上了楼，这样别人就听不见他们说的话了。
He's bought a specially big TV at vast expense so that everyone can see properly
他花大价钱买了一台特别大的电视机，这样每个人都能看清楚。
He had to bring forward an 11 o'clock meeting so that he could get to the funeral on time
他不得不把11点的会议提前，这样他就可以准时赶去参加葬礼。
so that前后是两个完整的句子。In order to（常常放句首）或 so as to（常常放句末）要灵活的多。
In order to ensure success we must have a complete and thorough plan.
为了保证成功，我们必须要有一个周密的计划。
In order to reach this limit a number of technical problems will have to be solved.
要达到这个限度，还有很多技术问题必须解决。
Write home as often as possible so as to relieve your mother from anxiety.
尽量多给家里写信，免得你母亲牵肠挂肚。
Let's turn in early, so as to get up early tomorrow to catch the train.
今儿早点睡，明儿好早起赶火车。
Kemp knocked loudly so as to be heard above the high babble of voices
肯普大声敲着，好让人们在一片高声喧嚷中听到他的声音。
so…that…意为“如此……以至于……”，so是副词，常常用来修饰形容词和副词，that引导结果状语从句（that也可以省略），在前后两个主语是同一个人或物时常和too…to…结构互换。
She spoke so quietly (that) I could hardly hear her.
她说话轻得我几乎听不见。
The programme has been so organized that none of the talks overlap.
日程做了精心安排，以使每一讲都没有重复内容。
The tears were streaming so fast she could not see
眼泪哗哗地流下来，她的视线一下子就模糊了。
She is so beautiful that all boys want to make friends with her. 她是如此的美丽以至于所有的男孩们都想和她做朋友。
My sister is too young to go to school. 我妹妹是如此的小以至于不能去上学。=My sister is so young that she can't go to school.
He is too busy to stay with his children. 他太忙了，没有时间陪孩子。=He is so busy that he can’t stay with his children.
在such…that…中such是限定词，修饰名词。
He's such a genius that I admire him.
他真是个天才，我佩服他。
It's such a boring lecture that all audience felt sleepy.
这讲座太无聊了，所有的听众都昏昏欲睡了。
I drank such a lot of coffeethat I was still wide awake at two in the morning.
我喝了这么多咖啡，以至于凌晨两点还没睡。
It was such delicious foodthat I’ll never forget its taste.
这是如此美味的食物，我永远不会忘记它的味道。
It was so exciting a trip that we will never forget.=
It was such an exciting trip that we will never forget.
这是一次激动人心的旅行，我们永远不会忘记。
He is so shy a boy that he always has few words.=
He is such a shy boy that he always has few words.
他是个害羞的男孩，总是很少说话。
注意，名词前面是many/much/few/little，不用such，用so：
My garden was covered with so many butterflies that I could hardly see the flowers.
我的花园里飞舞着很多蝴蝶，我几乎看不见花了。
They bought so much beef that some went bad.
他们买了太多牛肉，有些都变质了。
My hometown had changed so much that I could hardly recognize it.
故乡变化太大了，我几乎认不出来了。
My hand shook so much that I could hardly hold the microphone
我的手抖得如此厉害，几乎都拿不住麦克风了。
There's so much time that we can have a long holiday.
时间很充裕，我们可以好好放个假了。
He trusted her so little that he had her tailed.
他十分不信任她，所以派人跟踪她。
We had so little timeto catch the train that we had to eat our lunch on the fly.
我们要赶火车时间紧张，只能匆匆忙忙的扒了口饭。
He had so few friends that he was very lonely.
他朋友很少，孤独寂寞无人陪。
